RT Journal Article SR Electronic T1 Invited Commentary JF Demo Journal of Physical Therapy FD HighWire Press SP 733 OP 734 DO 10.demo/ptj.20100109.ic VO 91 IS 5 A1 Hill, Jonathan C. A1 Hay, Elaine M. YR 2011 UL http://demo.highwire.org/content/91/5/733.abstract AB